#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include <iostream>
using namespace std;
void f(char* c, char d) {
	*c = *c + 1;
	d = d + 1;
	cout << *c << d;
}
int main() {
	char a= 'A', b= 'a';
	f(&b, a);
	cout<< a  << b  << endl;
}